On the characterizations of some distinguished subclasses of Hilbert space operators

In this note, we present several characterizations for some distinguished classes of bounded Hilbert space operators (self-adjoint operators, normal operators, unitary operators, and isometry operators) in terms of operator inequalities.

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Bibliographic Details
Main Authors: Bouraya C.
Seddik Ameur
Format: Article
Published: 2018
Series:Acta scientiarum mathematicarum 84 No. 3-4
Kulcsszavak:Hilbert-tér - operátorok, Operátorelmélet
doi:10.14232/actasm-017-773-6

Online Access:http://acta.bibl.u-szeged.hu/56931
Description
Summary:In this note, we present several characterizations for some distinguished classes of bounded Hilbert space operators (self-adjoint operators, normal operators, unitary operators, and isometry operators) in terms of operator inequalities.
Physical Description:611-627
ISSN:0001-6969